chuni: add missing columns for course mode

core/data/schema/versions/SDHD_2_rollback.sql

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+ALTER TABLE chuni_score_course DROP COLUMN theoryCount, DROP COLUMN orderId, DROP COLUMN playerRating;

core/data/schema/versions/SDHD_3_upgrade.sql

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+ALTER TABLE chuni_score_course ADD theoryCount int(11), ADD orderId int(11), ADD playerRating int(11);